Sentrol Industrial GuardSwitches are non-contact, magnetic devices consisting of a switch and a magnet actuator. They are extremely tolerant of misalignment and the build-up of dirt, grease and other contaminants. The typical air gap between actuator and switch is 0.5" to 1.0". This allows easy installation and a margin for the usual "settling out" shift that occurs in machine guard doors and gates. GE Interlogix GuardSwitches actuate through wood, aluminum, stainless steel or any other nonferrous material. This allows the interlock switches to be concealed in the machine for added protection against tampering. In addition, all switching elements are hermetically sealed, so they can be installed in dirty or corrosive environments.

Sentrol Industrial 104 GuardSwitch Series Distributors
104 GuardSwitch Series

Sentrol Industrial 104 GuardSwitch series mini surface mount non-contact interlock/position switch is easy to install and is ideal for mail sorting and gaming machine position or security applications. Configuration with Sentrol actuator away from the switch. Proximity of ferrous materials usually reduces sense range - typically by 50%. The shape and type of material cause a wide diversity of effects. Testing is required to determine actual sense range for specific applications.

Sentrol Industrial 109 GuardSwitch Series Distributors
109 GuardSwitch Series

Sentrol Industrial 109 GuardSwitch has terminal connections and is easy to install. Rated at 3.0A for 6,000 cycles only. Other ratings are at 100,000 cycles. Configuration with Sentrol actuator away from the switch. Proximity of ferrous materials usually reduces sense range - typically by 50%. The shape and type of material cause a wide diversity of effects. Testing is required to determine actual sense range for specific applications.

Sentrol Industrial 111 GuardSwitch Series Distributors
111 GuardSwitch Series

Sentrol Industrial 111 GuardSwitch works well as a position sensor in an industrial application. Its small, sealed housing makes it ideal for use on commercial mowers or farm equipment. To avoid Sentrol switch failure, determine the actual load of the switch circuit and take steps to protect the switch from voltage spikes, current inrush and line/load capacitance using Sentrol Industrial recommendations.

Sentrol Industrial 113 GuardSwitch Series Distributors
113 GuardSwitch Series

Sentrol Industrial 113 GuardSwitch series non-contact interlock/position switch has a long narrow housing that makes it ideal for mounting on overhead door channels or machine conveyor rails. Use non-removable screws, bolts, or nuts to mount the Sentrol switch and actuator. Do not over-torque mounting hardware.

Sentrol Industrial 114 GuardSwitch Series Distributors
114 GuardSwitch Series

Sentrol Industrial 114 has an ABS plastic housing and works well as a position/interlock sensor in an industrial application. Its small, sealed housing makes it easy to conceal for defeat resistance. Mount the Sentrol switch on the stationary frame of the machine and connect the electrical wiring. When mounting the Sentrol switch on an ungrounded machine, connect the ground lead to one of the mounting screws.

Sentrol Industrial 115 GuardSwitch Series Distributors
115 GuardSwitch Series

Sentrol Industrial 115 GuardSwitch series non-contact interlock/position sturdy nylon 6/6 housed switch is used in many industrial applications because it is easy to install, conceal and is very economical. Can withstand inrush surge up to 4 amps. Voltage Drop 1.5V, minimum switch current of 30mA. 5 SER25 - Maximum 25 Sentrol switches in series, triac output.

Sentrol Industrial 124 GuardSwitch Series Distributors
124 GuardSwitch Series

Sentrol Industrial 124 series is a miniature 1/4" diameter barrel switch in ABS plastic housing. This Sentrol switch is specifically designed to fit into small channel of sliding guard doors. Another superior application is mail-sorting machines, using 2-3 Sentrol switches to indicate position of mail capacity in mail drawers. Mounting on or in ferrous material will reduce the sense range a minimum of 50%.

Sentrol Industrial 125 GuardSwitch Series Distributors
125 GuardSwitch Series

Sentrol Industrial 125 GuardSwitch series non-contact interlock/magnetically actuated position switch with a 5/8 inch diameter threaded barrel is ideal for situations where sensing distances may need to be adjusted. Three configurations are appropriate for Sentrol recessed interlock switch applications. Moving the Sentrol actuator parallel to the switch can result in on/off/on signal if the actuator passes by the switch rather than coming to rest in proximity to it. This is NOT a recommended configuration for interlock/position applications. The "T" configuration results in non-actuation.

Sentrol Industrial 126 GuardSwitch Series Distributors
126 GuardSwitch Series

Sentrol Industrial 126 is the only GuardSwitch that comes with a 12AWG cable and flex conduit, making it ideal for closet door switch or an energy saving device applications. Select a mounting location where the Sentrol switch and actuator can be installed with their labels reading in the same direction. Mount the Sentrol switch on the stationary frame of the machine and the actuator the moveable guard, door, or gate.

Sentrol Industrial 128C GuardSwitch Series Distributors
128C GuardSwitch Series

Sentrol Industrial 128C GuardSwitch series magnetically actuated position switch with an 8mm stainless steel threaded barrel and rated up to 25VA. This Sentrol switch is ideal for situations where sensing distances may need to be adjusted. For a normally open Sentrol switch, the meter will read high resistance with the actuator away (0L or greater than 10 Mega Ohms). The meter will read a low resistance with the Sentrol actuator in sense range (less than 1 Ohm).

Sentrol Industrial 129 GuardSwitch Series Distributors
129 GuardSwitch Series

Sentrol Industrial 129 GuardSwitch series magnetically actuated position switch with a 12mm stainless steel threaded barrel. It can handle up to 3 Amps and 100VA. When mounting in proximity to ferrous material (steel), the sense range can be reduced 50% minimum depending on the shape and type of material. Test the Sentrol switch in specific applications to determine the actual sense range.

Sentrol Industrial 141 GuardSwitch Series Distributors
141 GuardSwitch Series

Sentrol Industrial 141 GuardSwitch series non-contact interlock small switch's Kynar housing makes it ideal for washdown and chemical environments such as a dishwasher / chlorine environment or parts cleaning machine applications. When mounting on a ferrous material (steel), a 1/4" nonferrous (plastic or aluminum) spacer may be used under the Sentrol actuator and switch to restore most of the lost gap.

Sentrol Industrial 151 GuardSwitch Series Distributors
151 GuardSwitch Series

Sentrol Industrial 151 / 153 is a sturdy switch ideal for waste compactor applications. It is an economical Sentrol sensor often used in robotic arm position applications. The part number Sentrol 153 is the same as 151 in all respects except the cable exits 151 left and 153 right. Rated at 3.0A for 6,000 cycles only. Other ratings are at 100,000 cycles.

Sentrol Industrial 166 GuardSwitch Series Distributors
166 GuardSwitch Series

Sentrol Industrial 166 is a low profile switch that is DC only with a load rating of 100W. It is ideal for Boom truck applications such as emergency, electrical and similar service vehicles. This Sentrol switch cannot be used for AC applications. In DC applications it is polarity sensitive white to positive, black to negative. Armored cable is available with Sentrol 166 GuardSwitch series non-contact interlock/position switch.

Sentrol Industrial 171 GuardSwitch Series Distributors
171 GuardSwitch Series

Sentrol Industrial 171 is an interlock/position switch ideal for explosive environments where combustibles are being used such as grain elevators and painting booths. The Sentrol switch enclosure is UL classified for: Class I, Group B,C,D; Class II, Group E,F,G; Class III, Divisions 1 & 2. Proximity of ferrous materials usually reduces sense range - typically by 50%. The shape and type of material cause a wide diversity of effects. Testing is required to determine actual sense range for specific applications.

Sentrol Industrial 181 GuardSwitch Series Distributors
181 GuardSwitch Series

Sentrol Industrial 181/183 is an interlock/position sensor in a heavy-duty aluminum housing with a conduit connection for ease of installation. The part number Sentrol 183 is the same as 181 in all respects except the conduit connection, 181 is left and 183 is right. This Sentrol switch can withstand inrush surge up to 4 amps. Voltage Drop 1.5V, minimum switch current 30mA.

Sentrol Industrial 191 GuardSwitch Series Distributors
191 GuardSwitch Series

Sentrol Industrial 191 is a seamless stainless steel interlock/position sensor ideal for use in severe wash-down or chemical environments, such as food processing applications. The part number Sentrol 193 is the same as 191 in all respects except the cable exits 191 left and 193 right. Mount the Sentrol switch on the stationary frame of the machine and connect the electrical wiring. When mounting the Sentrol switch on an ungrounded machine, connect the ground lead to one of the mounting screws.

Sentrol Industrial 200 FailSafe GuardSwitch Series Distributors
200 FailSafe GuardSwitch

Sentrol Industrial 200 FailSafe Guardswitch non-contact safety interlock switch is designed as a safety interlock to be attached to a machine's guard or door. Unlike a standard Sentrol reed switch interlock, the circuit has been designed to have an "open" failure mode. If the main reed sticks closed when the guard opens, the in-line fuse will blow, opening the circuit. If the watchdog reed sticks closed when the guard closes, the in-line fuse will blow, opening the circuit. The circuit will draw up to 4.0A to blow the fuse in less than 200 ms.

Sentrol Industrial 301-BT GuardSwitch Series Distributors
301-BT GuardSwitch Series

Sentrol Industrial 301-BT are stainless steel, highly defeat resistant switches that are ideal for harsh environments and wash-down applications. The Sentrol 301-BT Series 300 DPST safety interlock switch is designed for use with safety monitored relays or monitored circuits. To achieve the optimum Series 300 defeat resistant feature of the Sentrol 301-BT, both the switch circuit and the tamper circuit must be connected. An optional third circuit can be provided to indicate at the panel which guard is open.

Sentrol Industrial 301 GuardSwitch Series Distributors
301 GuardSwitch Series

Sentrol Industrial 301 GuardSwitch is a defeat resistant position sensor that works best in interlock applications where a switch override must be prevented. Proximity of ferrous materials usually reduces sense range - typically by 50%. The shape and type of material cause a wide diversity of effects. Testing is required to determine actual sense range for specific applications.

Sentrol Industrial 302 GuardSwitch Series Distributors
302 GuardSwitch Series

Sentrol Industrial 302 is the same as the 301 but comes with armored cable for applications where unprotected cable wires could be damaged. To avoid Sentrol switch failure determine the actual load of the switch circuit and take steps to protect the switch from voltage spikes, current inrush and line/load capacitance using the following recommendations.

Sentrol Industrial 341-BT GuardSwitch Series Distributors
341-BT GuardSwitch Series

Sentrol Industrial 341-BT GuardSwitch series safety small, highly defeat resistant switch has Kynar housing which makes it ideal for wash-down and chemical environments. The GuardSwitch Series 300 Safety Interlock Switch, models 341-BT and Sentrol 343-BT DPST (double pole single throw) are designed for use with safety monitored relays or monitored circuits. To achieve the optimum defeat resistant features of the switch, both the Sentrol switch circuit and the tamper circuit must be connected. An optional third circuit can be provided to indicate at the panel which guard is open.

Sentrol Industrial 371-BT GuardSwitch Series Distributors
371-BT GuardSwitch Series

Sentrol Industrial 371-BT is a defeat resistant switch ideal for environments where combustibles are being used such as in mining, grain elevators and painting booths. The enclosure is UL classified for: Class I, Group B,C,D; Class II, Group E,F,G; Class III, Divisions 1 & 2. The Sentrol 371-BT Series DPST safety interlock switch is designed for use with safety monitored relays or monitored circuits. To achieve the optimum Series 300 defeat resistant feature of the Sentrol 371-BT, both the switch circuit and the tamper circuit must be connected.

Sentrol Industrial 371 GuardSwitch Series Distributors
371 GuardSwitch Series

Sentrol Industrial 371 GuardSwitch explosion proof interlock switch is a defeat resistant interlock/position sensor for an explosive environment. The enclosure is UL classified for: Class I, Group B,C,D; Class II, Group E,F,G; Class III, Divisions 1 & 2. Use non-removable screws, bolts, or nuts to mount the Sentrol switch and actuator. Do not over-torque mounting hardware.

Sentrol Industrial 381-BT GuardSwitch Series Distributors
381-BT GuardSwitch Series

Sentrol Industrial 381-BT Series DPST safety interlock switch is designed for use with safety monitored relays or monitored circuits. To achieve the optimum Series 300 defeat resistant feature of the Sentrol 381-BT, both the switch circuit and the tamper circuit must be connected. Mount the Sentrol switch on the stationary frame of the machine and mount the actuator on the moveable guard, door or gate. Keep the Sentrol switch and actuator within the listed sense range.

Sentrol Industrial 381 GuardSwitch Series Distributors
381 GuardSwitch Series

Sentrol Industrial 381 GuardSwitch 1/2" conduit enclosure is a defeat resistant interlock/position sensor for conduit connections and easy installation. Configuration with actuator away from the switch. Can withstand inrush surge up to 4 amps. Voltage drop is 1.5V, minimum switch current, 30 mA, triac output. Do not exceed 10 switches in series. The part numbers 381 and Sentrol 383 are the same in all respects except the conduit connection, 381 is left and 383 is right.

Sentrol Industrial 391-BT GuardSwitch Series Distributors
391-BT GuardSwitch Series

Sentrol Industrial GuardSwitch Series 300 Safety Interlock Switch, models 391-BT and 393-BT DPST (double pole single throw) are designed for use with safety monitored relays or monitored circuits. To achieve the optimum defeat resistance features of the Sentrol switch, both the switch circuit and the tamper circuit must be connected. An optional hird circuit can be provided to indicate at the panel which guard is open. This seamless stainless steel highly defeat resistant Sentrol safety switch is ideal for corrosive, machine oil, and extreme wash-down environments such as food and meat processing.

Sentrol Industrial 391 GuardSwitch Series Distributors
391 GuardSwitch Series

Sentrol Industrial 391& 393 is a seamless stainless steel defeat resistant interlock/position sensor that is ideal for heavy wash-down applications. The part number 391 and the Sentrol 393 are the same in all respects except the cable exits 391 left and 393 right. Position the Sentrol switch and actuator so the labels are reading in the same direction.